| The voltage step-up converter described in this article is a transformerless design based on just one integrated circuit and a handful of...
All items tagged with Design and Portable (4)
| This inexpensive oscilloscope can be used at frequencies up to 20-30 kHz (optionally up to 1 MHz). It works from 12 V and can thus be use...
| This transceiver was designed in response to a need for a simple, easy to build, self-contained radio for use through the loeal 23-em (...
| The starting point for this design is the well-known 5/8-lambda whip antenna with base coil as used for mobile communications in the 2-...